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Cheap flights from Seattle to Denver from £63
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
9 Nov — 16 Nov1
Cheap flight deals from Seattle to Denver
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
Cheapest flights from Seattle to DenverExplore the most affordable flight options available from Seattle to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2026.
Explore the most affordable flight options available from Seattle to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2026.
Sat 7/1112:20 -
1 stop8h 07m
Sat 14/1115:55 -
Nonstop3h 04m
Deal found 8/10£123
Fri 6/1106:30 -
1 stop7h 55m
Fri 13/1120:55 -
Nonstop3h 10m
Deal found 8/10£126
Thu 10/1209:25 -
Nonstop2h 35m
Tue 15/1212:35 -
2 stops7h 05m
Deal found 8/10£127
Tue 10/1110:06 -
Nonstop2h 52m
Thu 12/1115:25 -
Nonstop3h 02m
Deal found 7/10£128
Sun 8/1120:00 -
Nonstop2h 55m
Fri 13/1106:00 -
Nonstop3h 12m
Deal found 6/10£129
Wed 4/1111:35 -
2 stops8h 30m
Mon 9/1106:15 -
Nonstop3h 10m
Deal found 8/10£130
Thu 5/1121:25 -
1 stop9h 35m
Thu 12/1106:15 -
Nonstop3h 10m
Deal found 8/10£131
Tue 27/1005:05 -
Nonstop2h 37m
Sat 31/1007:40 -
Nonstop3h 07m
Deal found 7/10£133
Fri 6/1106:30 -
1 stop7h 55m
Sun 15/1108:45 -
1 stop7h 20m
Deal found 8/10£134
Sun 8/1120:00 -
Nonstop2h 55m
Mon 9/1118:15 -
1 stop6h 42m
Deal found 6/10£137
Best flights from Seattle to DenverDiscover carefully curated flight deals from Seattle to Denver that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.
Discover carefully curated flight deals from Seattle to Denver that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.
Tue 15/1223:37 -
1 stop9h 30m
Sat 19/1218:35 -
Nonstop3h 11m
Deal found 7/10£126
Sat 12/1206:20 -
1 stop6h 00m
Fri 18/1218:40 -
1 stop6h 25m
Deal found 6/10£134
Sat 6/214:30 -
1 stop7h 30m
Thu 11/205:40 -
1 stop4h 53m
Deal found 8/10£134
Sat 7/1108:35 -
1 stop7h 05m
Sat 14/1112:55 -
2 stops8h 20m
Deal found 8/10£138
Sun 22/1109:25 -
1 stop6h 45m
Tue 1/1212:52 -
1 stop8h 27m
Deal found 5/10£134
Tue 24/1108:30 -
Nonstop2h 47m
Fri 27/1106:00 -
Nonstop3h 12m
Deal found 7/10£145
Tue 8/1208:30 -
Nonstop2h 52m
Sat 12/1206:00 -
Nonstop3h 18m
Deal found 5/10£147
Thu 19/1113:35 -
Nonstop2h 30m
Thu 26/1105:50 -
1 stop5h 50m
Deal found 5/10£180
Wed 25/1119:59 -
Nonstop2h 48m
Mon 30/1106:00 -
Nonstop3h 12m
Deal found 7/10£160
Fri 25/1208:05 -
2 stops8h 00m
Mon 28/1216:25 -
2 stops8h 15m
Deal found 6/10£218
Direct flights from Seattle to DenverExplore direct flight options from Seattle to Denver based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 October 2026.
Explore direct flight options from Seattle to Denver based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 October 2026.
Tue 10/1110:06 -
Nonstop2h 52m
Thu 12/1115:25 -
Nonstop3h 02m
Deal found 7/10£128
Sun 8/1120:00 -
Nonstop2h 55m
Sat 14/1113:14 -
Nonstop3h 11m
Deal found 6/10£129
Tue 27/1005:05 -
Nonstop2h 37m
Sat 31/1007:40 -
Nonstop3h 07m
Deal found 7/10£133
Thu 26/1118:00 -
Nonstop2h 49m
Mon 30/1106:00 -
Nonstop3h 12m
Deal found 7/10£134
Thu 29/1015:49 -
Nonstop2h 41m
Sun 1/1107:40 -
Nonstop3h 07m
Deal found 7/10£134
Wed 4/1109:30 -
Nonstop2h 35m
Mon 9/1106:15 -
Nonstop3h 10m
Deal found 8/10£141
Mon 26/1009:05 -
Nonstop2h 44m
Tue 10/1113:14 -
Nonstop3h 11m
Deal found 7/10£145
Wed 28/1005:05 -
Nonstop2h 37m
Wed 4/1107:40 -
Nonstop3h 07m
Deal found 5/10£147
Wed 18/1109:25 -
Nonstop2h 35m
Wed 25/1121:00 -
Nonstop3h 10m
Deal found 6/10£148
Wed 28/1015:30 -
Nonstop2h 45m
Wed 4/1115:40 -
Nonstop3h 10m
Deal found 5/10£149
Tue 10/1110:06 -
Nonstop2h 52m
Sat 14/1107:03 -
Nonstop3h 04m
Deal found 7/10£150
Thu 5/1113:55 -
Nonstop2h 35m
Tue 10/1120:40 -
Nonstop3h 10m
Deal found 6/10£153
Last-minute flights from Seattle to DenverDiscover last-minute flight deals from Seattle to Denver. Data last updated 10 October 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Denver. Data last updated 10 October 2026 and is based on user searches.
Tue 27/1005:05 -
Nonstop2h 37m
Sat 31/1007:40 -
Nonstop3h 07m
Deal found 7/10£133
Wed 4/1111:35 -
2 stops8h 30m
Mon 9/1106:15 -
Nonstop3h 10m
Deal found 8/10£130
Thu 5/1121:25 -
1 stop9h 35m
Thu 12/1106:15 -
Nonstop3h 10m
Deal found 8/10£131
Fri 6/1106:30 -
1 stop7h 55m
Fri 13/1120:55 -
Nonstop3h 10m
Deal found 8/10£126
Fri 6/1106:30 -
1 stop7h 55m
Sun 15/1108:45 -
1 stop7h 20m
Deal found 8/10£134
Sat 7/1112:20 -
1 stop8h 07m
Sat 14/1115:55 -
Nonstop3h 04m
Deal found 8/10£123
Sun 8/1120:00 -
Nonstop2h 55m
Fri 13/1106:00 -
Nonstop3h 12m
Deal found 6/10£129
Sun 8/1120:00 -
Nonstop2h 55m
Mon 9/1118:15 -
1 stop6h 42m
Deal found 6/10£137
Tue 10/1110:06 -
Nonstop2h 52m
Thu 12/1115:25 -
Nonstop3h 02m
Deal found 7/10£128
Thu 12/1106:15 -
Nonstop2h 30m
Wed 18/1112:35 -
2 stops7h 05m
Deal found 7/10£127
Mon 16/1111:35 -
1 stop5h 55m
Tue 17/1112:35 -
2 stops7h 05m
Deal found 6/10£134
One-way flights from Seattle to DenverSearch for one-way flight options from Seattle to Denver. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.
Search for one-way flight options from Seattle to Denver. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.
Thu 29/1012:20 -
1 stop8h 07m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/10£63
Sat 9/107:05 -
Nonstop2h 44m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£64
Tue 8/1217:57 -
1 stop4h 17m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/10£67
Sun 8/1120:00 -
Nonstop2h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/10£70
Tue 8/1208:05 -
2 stops8h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/10£71
Tue 27/1005:05 -
Nonstop2h 37m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/10£74
Tue 24/1120:40 -
Nonstop2h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/10£75
Wed 11/1116:40 -
2 stops14h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/10£76
Fri 27/1105:35 -
1 stop5h 28m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 6/10£78
Sat 31/1013:16 -
1 stop7h 54m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/10£82
Sat 2/123:59 -
1 stop9h 06m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/10£82
Wed 11/1108:30 -
Nonstop2h 47m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/10£83
Find flight deals from Seattle to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 October 2026.
Cheapflights Fare Finder
Customise your flight search to find flights from Seattle to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 10 October 2026.
Use the filters below to find and compare flights from Seattle to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest return flight
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Mon 9/11
12:20-21:27
1 stop8h 07m
Denver Intl
Wed 31/12
00:00-23:00
Nonstop0h 00m
£63
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Mon 1/2
05:40-11:30
1 stop4h 50m
Denver Intl
Wed 31/12
00:00-23:00
Nonstop0h 00m
£67
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Tue 10/11
09:25-17:10
1 stop6h 45m
Denver Intl
Wed 31/12
00:00-23:00
Nonstop0h 00m
£67
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Sat 21/11
13:25-20:29
1 stop6h 04m
Denver Intl
Wed 31/12
00:00-23:00
Nonstop0h 00m
£67
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Sun 6/12
07:30-17:55
2 stops9h 25m
Denver Intl
Wed 31/12
00:00-23:00
Nonstop0h 00m
£71
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Mon 30/11
19:59-23:47
Nonstop2h 48m
Denver Intl
Wed 31/12
00:00-23:00
Nonstop0h 00m
£75
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Tue 1/12
05:40-15:15
2 stops8h 35m
Denver Intl
Wed 31/12
00:00-23:00
Nonstop0h 00m
£86
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Sat 2/1
13:53-17:33
Nonstop2h 40m
Denver Intl
Wed 31/12
00:00-23:00
Nonstop0h 00m
£116
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Tue 10/11
12:45-16:26
Nonstop2h 41m
Denver Intl
Wed 31/12
00:00-23:00
Nonstop0h 00m
£116
Fastest return journey
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Tue 10/11
06:10-09:45
Nonstop2h 35m
Denver Intl
Wed 31/12
00:00-23:00
Nonstop0h 00m
£116
Showing 1-10 of 21 resultsSorted by cheapest first
Best time to book a flight from Seattle to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Seattle with our price prediction graph.
SEA-DEN
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Denver
Prices
Airlines
Delays
How far ahead should I book a flight from Seattle to Denver?
The price you pay for your flight from Seattle to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 73 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Denver?
Currently, January is the cheapest month in which you can book a flight from Seattle to Denver (average of £120). Flying from Seattle to Denver in June is currently the most expensive (average of £255). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to DEN?
Find hourly flight availability from Seattle to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 October 2026.
One of the essential ways to save on airfare from Seattle to Denver is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 63% on airfare.
How often are flights from Seattle to Denver delayed?
About 17% of weekly flights between Seattle and Denver have experienced delays in the past year, with the average delay time being 137 minutes.
What is the most punctual flight time for Seattle to Denver flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Seattle to Denver flights?
Over the past year, United Airlines have had the lowest number of delays on this route, with just 8% of flights being delayed.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Complete your trip
Denver flight routes
Direct flights to Colorado
Flights by cabin class
Other flight options
Other flights from Seattle
Popular flights
Complete your trip
Complete your trip to Denver by adding a car hire and/or hotel booking to your travel itinerary.
Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 10 October 2026.
Direct flights to Colorado
Book a non-stop flight to one of these other cities located in Colorado.
Search flights from Seattle to Denver by cabin class
Find flights from Seattle to Denver, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Denver flights
Browse other Seattle and Denver flight options. Last updated on 10 October 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on 10 October 2026.
Popular flight searches
Check out other popular destinations found by fellow travellers in 2026
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Seattle to Denver?
Cheapflights makes it easy to find Seattle to Denver flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Seattle to Denver?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Denver from Seattle.
Can Cheapflights find flights from Seattle to Denver with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Denver flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Seattle to Denver become cheaper?
Of course! You can now track prices for flights from Seattle to Denver and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.